http://kamome.2ch.net/test/read.cgi/math/1277774159/102 2010/08/30 18:50:20
http://kamome.2ch.net/test/read.cgi/math/1281455724/722 2010/08/30 18:55:36
http://kamome.2ch.net/test/read.cgi/math/1249274922/122 2010/08/30 18:58:07
http://kamome.2ch.net/test/read.cgi/math/1248304771/301 2010/08/30 18:58:58